today the elderly make up 13% of the u.s. population. by 2050, they are expected to be 20%. 20%. that means you'll need to spend a lot more on social security and medicare. meanwhile the development of new miracle treatments we hope will keep happening and that will push the cost even higher. the future turns out to be expensive. that's simply the reality of it. and opposing tax increases doesn't change that reality. there's nothing in grover norquist's pledge that stops the aging process. if there was, i would take it. so there's no way the tax receipts of the 1960s will support the demographics of america in the 2020s or the 2030s. anyone who says otherwise is not taking the reality seriously. joining us is a man who always takes reality seriously. chris hayes. >> religiously. >> religiously. so one thing i always think is true in our political discussions is we don't like to face up to big changes. we like to use them as evidence for why whatever policies we support need to happen. but particularly the aging of this society, i don't think we've come anywhere close to thinking